1 c. butter
1 (10 oz.) bag Hershey's chocolate chips
1 3/4 c. granulated sugar
4 eggs
1 1/2 c. flour
1 tsp. vanilla
1 c. pecans, chopped

Melt butter and chocolate chips, stirring constantly. In a large mixing bowl, mix sugar with melted chocolate. Add eggs, one at a time, beating well after each egg. Add flour and vanilla. Mix well. Add nuts (optional). Pour in greased 9 x 13-inch pan. Bake at 350 degrees for 30 to 40 minutes.